Cutting-machine.



n; T. WADHAMS,

CUTTING MACHINE, APPLlCATION FILED AUG. 7, 1915.

win

u, T. WADHAMS. CUTTING MACHINE.-

APPLICATION FILED AUGJ. 19l5- Patentd. Apr. 30

2 SHEETSSHEET Z- In V611 tor.-

rename.

To all whom it may concern: I

Be it knownthat l, DARIUS T. WADHAMs, a citizen of the United'States, residing at Oswego, in the county of Oswego and State of New York, have'invented new and useful Improvements in Cutting-Machines, of which the following is a Specification.

This'invention relates to cutting machines and 'consists in an improved arrangement and mode ofoperationdesigned particularly for imparting the approved shear or inclined stroke to the cutting knife in an improved manner wherein the dissipation of the power by friction is materially reduced. A r gly, my invention consists in the arrangement of theoperating connections to the knife whereby the direction of the force applied thereto will substantially coincide with the direction in which the knife is constrainedto move by its guidingmeans. The resultingoperation ofthe knife is uniform and smoothin its action owing to the great reduction in the frictional resistance of the guiding parts which heretoforehas been a considerable disturbing factor both in absorbing'of the power and in the resulting unevenness of the cutting operation.

The features of my invention are illustrated in the accompanying drawings wherein a desirable embodiment thereof is shown and'wherein the reference numerals of this description are applied to corresponding parts in the several views. I 1 a In the drawings Figure 1 is a front elevation of a machine embodying the features of my invention. Fig. 2 is a partial side elevation thereof-and Fig. 8is a detail view of the guiding parts.

In the drawings I have shown a desirable construction embodying the features of my invention for contributing to the effectiveness of the cutting operation. wherein they are incorporated in amachine employing an approved double crank arrangement for operating the knife. As shown the machine comprises the usual right and left standards 1 and 2 secured together by suitable gobetween 3 and cross-rods (not shown). to form the frame support for the table 4; upon 1: g' ll lli par ies a. waniaaaus, or oswneo; new YORK, nssrenoa ire oswne nnw YORK.

j specification of Letters atent.

were. I i

inn GRAY, an, or

v "CUTTING-MACHINE;

which the stock to be out is placed. rOppo sitely supported on the frame above the table arethe usual uprights 6 and the front faces thereof are arranged, in conjunction with the front guide plate 7 to form the oppositely positioned slide-ways for the knife: stock 8. a.

The knife stock 8, with the knife ,9 bolted thereon, is fitted to reciprocate inthe slideways so formed and is shown to be operated from the cranks 10-11 arranged on the opposite ends of a crank shaft 12 suitably journaled in the frame and operated in the customary manner through a large gear 14 thereon from any suitable'source of power. The connections from the cranks l0-11 to the knife stock for transmitting the motion thereto in the improved manner of my invention are here shownto comprise means at the left hand side for imparting to the knife a pulling force in the desired inclined direction for producing the usual draw out crumed a bell crank lever 18 connected to the knife stock 8 by alink 19 pivotally connected therewith at 20 and with the knife stock at 21. An adjustable connecting rod 22 is universally connected to the crank 10 and to the bell crank lever 18 whereby the movement is communicated. from the crank to the knife throughthe lever 18and there- .by transformed to a downwardly inclined force. The force so applied is substantially parallel to the usual guiding parts for the knife here shown as a guideway bearing 24: formed inthe rear face of the guide plate 7 as best shown in Fig. 3 within which is fitted a sliding block 25 pivotally carried on the knife stock. As shown the guideway V .l atented AprQEQDJWLS. Application filed August 7,1915. Serial m. 44,346.

may be adjustable for wear by means of the tapering gib piece 26 secured in position by i set screw 29. A' suitable felt oiler 30 is shown on the end of the block for lubricata forked knuckle member 33 pivoted' to the bellcrank leverlS by a pin 3% arranged at right angles'to the pin 32 whereby universal connection is' made. Similarly, universal connection ismade to the crank at-the 'lower 'endofthe rod 22 by means of a yoke piece 36f. connected by pivot pin 37"to a knuckle member 38 journaled on the crank pin 39, the p" 37 and the crank pin 39 being. -i in right angular relation.

*From the right hand crank 11 connection is made directly to the knife'stock by the adjustable connection L0 universally connected by suitable joints with the crank pin.

and with the end of the knife stock. As will be readily understood the stresses applied to the knifeatthe right hand side will be a resultant of the downward force imparted thereto by'the crank-'11 through the "connectio'n 4:0 Land'the longitudinally directed force applied through the described connecltions at the left hand side whereby its direc- 5 to the minimum and in consequence-the cuttion of motion will substantially coincide with the direction of stroke'determined by the guideway 24e. It thus results that the direction of motiongiven to the knife by its operating connections is substantially parallel to its guiding parts whereby the frictional resistance in the latter is reduced ting operationissteadier and more easily made. By-the reduction in the power ab sorbedin friction there is a corresponding gain 1n' the forces effectiveiln the cutting In: the drawings the knife shown in- 7 clined inits' elevated position'for produc- 3 ing the double shear efiect particularly described and claimed in patent to Niel Gray NO;"'1,084,006" and my invention may I desirably be applied to. such a machine, but

paper or'other materiaL "itiis not in any sense limited to such use but may 'desirably be applied to any sort of a shear-stroke cutting machine, for cutting -While- 1 have illustrated a desirable embodiment of my invention itwill be under stood that many changescan bemade thereo Itis therefore intended that all matter conin without departing from the scope thereof.

tained herein shall be interpreted as illustrative and notin a limiting sense.

Having described my invention I claim, 1 A machine of the .character'described Y 7 having a supporting frame, awtablefor the work, a lmife stock, a knifecarried by the stock, a guide-WayQmember, engaging means therewith carried by i the knife-stock, a

7 from theopposite crank to the knife-stock whereby'the resultant forces applied to the latter are substantially in the direction parallel to the movement of the knife. 2. A machine of the character described having a supportingframe, a table forthe work, a knife-stock, a knife carried by the stock, a guide-plate provided with an inclined guide-way, a guide-block pivotally carried by the knife-stock and fitted to the guide-way, an adjustable gib-piece for the guideway, a felt-oiler carried by the guide block, brackets supported on the side of the supporting frame, a bell-crank-lever fulcrumed in the brackets, a crank-shaft, oppositely positioned cranks therein, an adjustable universal connection from one crank to the bell-cran'kdever, a link connection pivoted to said lever and to the knife-stock whereby movement isimparted thereto from the 'bell-crank-lever in an inclined direction and an adjustable connecting rod from the opposite crank universally connected thereto and to the knife-stock substantially as described. 7 a

3. A machine of the character described having a supporting frame, a table for the work, a knife stock, a knife carried by the stock, a guide-way member, engaging means therewith carried by the knife-stock, a crank-shaft, oppositely arranged cranks thereon, connections from one crank to the knife-stock comprising a bell-crank-lever suitably fulcrumed, a link pivotally connected to the bell-crank-levcr and to the knife-stock, a pitman connected to the crank and a universal connection connecting said pitman to the bell-crank-lever, said universal connection, fulcrum and pivotal connection of thelink being arranged with their central transverse axes in the same vertical plane and in alinement with the knife stock, and a connecting rod from the opposite crank to the knife stock whereby the 'resultant forces applied to the latter are substantially in the direction parallel to the movement of the knife.

4. A machine of the character described having a supporting frame, a table for the work, a knife stock, a knife carried by the stock, a guide-way member, engaging means the knife-stock, a pitman connected to the crank and a universal connection connecting In testimony wheneof I have signed my.

said pitman to the bell-crank-lever, said uniname to this specification in the presence versal connection, fulcrum and pivotal conof two subscribing Witnesses.

nection of the link being arranged with their DARIUS T. WADS. 5 central transverse axes in the same vertical Witnesses:

plane and in alinement with the knife stock PATRICK J. CLANoY,

substantially as described. ALICE A. SKINNER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,"

Washington, D. G. 

